[Developers] phase

There are a few issues involved here.
First here is how it migbht be done. the current phase is contained
as a static member of the class initial_params. Lets say we are working
with the quasi newton function minimizer in the file newfmin.cpp.
first we need to add
#include <admodel.h>
near the top of the file.
then at the right place(s) add something like
if (ad_printf) (*ad_printf)("Current Phase %d ",
initial_params::current_phase );
However this will break all code that just uses the autodif stuff
I think as the symbol initial_params::current_phase will be undefined.
Maybe someone has a better idea.